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Method for determining the material composition of asphalt pavement interlayer treatments

A treatment measure, a technology for asphalt pavement, applied in the direction of using a stable shear force to test the strength of materials, etc., can solve the problem of not forming a design method, and achieve the effect of easy movement and operation, and lightweight test equipment

Active Publication Date: 2018-03-02
CHINA ACAD OF TRANSPORTATION SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] At present, various studies have not formed a systematic design method for the material composition of the interlayer treatment measures, and the test equipment used is also varied.

Method used

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  • Method for determining the material composition of asphalt pavement interlayer treatments
  • Method for determining the material composition of asphalt pavement interlayer treatments
  • Method for determining the material composition of asphalt pavement interlayer treatments

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Embodiment Construction

[0036] The invention provides a method for determining the material composition of the asphalt pavement interlayer treatment measures, which mainly includes the following steps:

[0037] The test piece forming step is to use a test piece forming mold to form a plurality of test pieces to be measured, wherein the interlayer treatment measures of each test piece are different from each other in the amount of cement sprinkled, the particle size of crushed stones or the spread of crushed stones; The amount of cementing material sprinkled, the particle size of crushed stone or the amount of crushed stone spreading mentioned here are different from each other means: among the multiple test pieces formed, the amount of cementing material sprinkled in the interlayer treatment measures of any two test pieces At least one indicator of the amount of crushed stone, the particle size of the crushed stone or the amount of crushed stone spread is different from each other.

[0038] Heat the ...

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Abstract

The invention discloses a method for determining the material composition of asphalt pavement interlayer treatment measures, which comprises the following steps: a step of forming a test piece; putting the test piece to be measured into a shearing measurement mold after being kept warm for 5-6 hours, And select the angle of the shear measurement mold according to the ratio of the vertical load and the horizontal load; after the test piece is kept warm for 30 minutes, put the shear measurement mold comprising the test piece into the shear measurement machine to carry out the shear measurement test; record Shear the maximum force value sensed by the sensor in the machine and the maximum displacement value when it reaches the maximum force value, and calculate the shear strength according to the shear angle and shear area; record the calculated shear strength in the table Middle; after measuring all the specimens and recording the shear strength of all specimens, select the maximum shear strength from the table, the amount of cement sprinkled corresponding to the maximum shear strength, the particle size of gravel And the amount of gravel spread is the material composition of the determined asphalt pavement interlayer treatment measures.

Description

technical field [0001] The invention belongs to the technical field of highway engineering, and in particular relates to a method for determining the material composition of asphalt pavement interlayer treatment measures. Background technique [0002] Maintaining good bonding between the asphalt mixture structure layers of the asphalt pavement will significantly improve the pavement performance, but insufficient bonding between the asphalt mixture surface layers will lead to spalling, potholes, interlayer slippage and other diseases of the pavement surface. [0003] In order to ensure the effective bonding between layers of asphalt pavement on asphalt pavement, inter-layer asphalt is sprinkled and waterproof layers are often used in practice to enhance inter-layer bonding. There are four types of commonly used waterproof adhesive layers: (1) coatings, such as neoprene latex asphalt, emulsified asphalt, rubber asphalt, epoxy resin, SBS modified asphalt, etc., the thickness is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/24
Inventor 魏道新陈景郭朝阳边莉陈明于会廉王瞳江睿南
Owner CHINA ACAD OF TRANSPORTATION SCI
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